James t



J. T. ROBB.

GAS AND ELEOTRIG LAMP FIXTURE.

{No'ModelJ Patented Apr. 26, 1887.

K7 2 W 7 a UNITED STATES PATENT OFFICE.

JAMES T. ROBE, OF NEW YORK, N. Y.

GAS AND ELEGTR'lC-LAMP FIXTURE. I

SPECIFICATION forming part of Letters Patent No. 361,782, dated AprilZG,1887.

Application filed September 26, 1885. Serial No. 178316. (No model.)

. swinging bracket used for supplying either gas or electric light.Heretofore in such fixtures there have usually been two swinging arms,one for gas, the other for electrical conductors, connected mechanicallyso as to swing together. In my invention I employ only one swinging arm,this being a tube within which is a smaller tube, through which the gasis conveyed, while the electrical conductors pass through the externaltube outside of the gastube. This is the main feature of my invention.The external tube takes the place of the ornamental shell or casingcommonly employed in gasfixtures. It, however, in this case forms itselfthe main supporting part, and hence the gas-tube can be made muchsmaller than, usual.

My invention consists, further, in the novel devices and combinations ofdevices employed by me to fully carry my invention into effect, ashereinafter set forth and claimed.

My invention is illustrated in the accompanying drawings, in whichFigure 1 is a View in elevation of a fixture embodying said invention;Fig. 2, a longitudinal section of the swinging joint and arm with themiddle part of the arm broken away on account of lack of space, and Fig.3 a top view of the stationary part of the joint.

tends below said block, being made in one piece therewith, into theaperture 1), in which it turns, said aperture being closed at the bottomby a cap, 6, and screw f. Part d has a circumferential groove, g,opposite the end of gasway c, and an aperture, h, extends in from saidgroove to longitudinal aperture 2', which extends up entirely throughblock D, as shown. Part (Z hasalso a larger groove, 7c, whose pur- 5pose will be presently explained, and which lies within the collar Z,extending up from part at. There is also an aperture, at, extendinglongitudinally through part a for the electrical conductors, and thisaperture ends within the collar Z.

At the rear side of block D is an aperture, which is closed by theornamental screw-knob n. Into the opposite side ofpart D are screwed thetwo tubes which form the swinging arm of the bracket. The external tube,G, is screwed into the collar H, and the small inner gas-tube, G, isscrewed directly into the block opposite the gasway. The tubes are ofsuitable length. At their outer ends they are both screwed together intothe head I. A gasway extends through head I to the gas-burner, K,carried thereby. Into the lower side of the head is screwed the hollowneck 0, which carries the incandescent-electric-lamp socket L. The outerends of the tubes G G are similarly screw-threaded, so that both may bescrewed into head I at the same time.

The wires 1 2 are attached to the housewires coming from the wall, andare united into the flexible conductingcord M. This cord extends throughthe aperture 111, is wound around (I in the groove 70, this groove andthe collar 1 forming a chamber to hold the cord, and extends up throughhole 1) in block D into tube G, outside of the gas-tube, passescontinuously through said tube and through neck 0, and the wires arethen connected, in the usual manner ,with the lamp-socket terminals.

In wiring the fixture the cord may be passed 0 through the differentparts before they are united together. The screw-knob a may be removedin order to. thread the wire through the hole 1). The passage for thegas is through '0 t0 groove g and apertures h i to tube G.

As the arm is swung in one direction or the other, the flexible cordwinds around or unwinds from the groove k. The bracket is so placedrelative to the wall or'other object or is provided with a stop of sucha character that 10o it cannot be turned entirely around, whereby thecord can be wound only once around the 5 block is applicable to swingingbrackets used for electric light only.

NVhile I have shown and described a bracket with only one swinging arm,my invention may evidently be readily used with two or [0 more arms, allthe turning joints being similarly constructed.

What I claim is i 1. In a combined gas and electric-lamp fixture, thecombination of a stationary part, a

I 5 part turning therein and provided with a groove and carrying asupporting-block, two concentric tubes extending from said block, onefor conveying gas, the other inclosing flexible electric conductors,said conductors extending through said stationary part, encircling thegrooved portion of said turning part, and passing through saidsupportingblock into said tube, and a gasway through the parts into theother tube, substantially as set forth. 2. The combination of thestationary part having a collar, Z, and the turning part having agroove, k, with the flexible conductors passing through saidparts andlying in the chamber formed by said collar and groove, substantially asset forth.

This specification signed and witnessedthis 2-.Lth day of July, 1885.

JAlllES ROBB. Witnesses:

P. H. KLEIN, Jr., JNO. F. GEIDEL.

